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Calculati:
a) (- 1/5)+(-3/5)
b)(-1/9 +7/3)
c)+3/8+(-5/4)
d)(+14)+(-3,24)
e)8,5+(-1)
f)13/8 +(-1) +2/3 +(-1/6)
g)3,1+(-4) + (-2,7)+0,9
h)2,7+31,09+(-28,49)+(-24,01)
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Răspuns :

Renatemambouko
a) (- 1/5)+(-3/5)=-1/5-3/5=-4/5
b)(-1/9 +7/3)=-1/9+7/3=-1/9+21/9=20/9
c)+3/8+(-5/4)=3/8-5/4=3/8-10/8=-7/8
d)(+14)+(-3,24)=14-3,24=10.76
e)8,5+(-1)=8,5-1=7,5
f)13/8 +(-1) +2/3 +(-1/6)=13/8-1+2/3-1/6=(39-24+16-4)/24=27/24=9/8
g)3,1+(-4) + (-2,7)+0,9=3,1-4-2,7+0,9=-2,7
h)2,7+31,09+(-28,49)+(-24,01)=2,7+31,09-28,49-24,01=33,79-52,5=-18,71

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